Inside, you'll find step-by-step instructions
accompanied by helpful illustrations for such projects as building
and properly using a homemade biodiesel reactor, which enables you
to drive you car on vegetable oil purchased at a fraction of the
price of gas or even on second-hand oil obtained from restaurants
free of charge.

Run Your Diesel Vehicle on Biofuels also
includes a list of international parts suppliers and various
manufacturers' warranty statuses regarding vehicles converted to
biodiesel.